Add 80/21 and 40/63
1st number: 3 17/21, 2nd number: 40/63
80/21 + 40/63 is 40/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 63 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 21 × 3 = 63,
80/21 = 80 × 3/21 × 3 = 240/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
40/63 = 40 × 1/63 × 1 = 40/63 - Add the two like fractions:
240/63 + 40/63 = 240 + 40/63 = 280/63 - 280/63 simplified gives 40/9
- So, 80/21 + 40/63 = 40/9
In mixed form: 44/9
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